‘Friends’ star Jennifer Aniston dating Justin Theroux?

London: Jennifer Aniston is reportedly dating actor Justin Theroux, as the pair were seen dining together in West Hollywood May 18.

"Jen and Justin have recently started dating. They`ve known each other for a while, but they`re more than friends now. They`re cautious - they`re both taking it slowly," contactmusic.com quoted a source as saying.

Aniston, who previously dated Vince Vaughn and John Mayer, enjoyed a romantic dinner date with Theroux at the Sunset Towers Tower Bar in West Hollywood, and it is said the couple have been getting to know each other "for a while".

The couple arrived at the restaurant separately and enjoyed a three-hour dinner, but left via an underground car parking in a chauffeur-driven car which took them both back to Jennifer`s Beverly Hills mansion.